1 Industrial chemicals; Chemical preparations for use in industry; Metal plating chemical compositions; Metal plating chemical compositions, namely, metal plating solutions; Metal plating chemical compositions, namely, copper plating solutions; Metal plating chemical compositions, namely, tin plating solutions; Metal plating chemical compositions, namely, silver plating solutions; Metal plating chemical compositions, namely, tin alloy plating solutions; Metal plating chemical compositions, namely, copper alloy plating solutions; Metal plating chemical compositions, namely, silver alloy plating solutions; Metal plating chemical compositions, namely, gold alloy plating solutions; Metal plating chemical compositions, namely, gold plating solutions